CN201670121U

CN201670121U - Catenary deicer

Info

Publication number: CN201670121U
Application number: CN2010201971715U
Authority: CN
Inventors: 张忠林
Original assignee: Sichuan Huiyou Electric Co Ltd
Current assignee: Sichuan Huiyou Electric Co Ltd
Priority date: 2010-05-20
Filing date: 2010-05-20
Publication date: 2010-12-15
Anticipated expiration: 2020-05-20

Abstract

The utility model relates to a catenary deicer, solving the problems of the existing deicer that the ice melting time and the ice melting current are not adjusted and installation and maintenance are inconvenient. A circuit breaker and a current transformer are connected in series and then are connected between a first bus (1B) and a second bus (2B) in parallel, and a voltage transformer and a high-voltage fuse are connected in series and then are connected on the first bus (1B) in parallel. A silicon controlled or thyristor valve group is connected between the second bus (2B) and a third bus (3B) in parallel. The coil of the current transformer is connected with an analog input module by a current transmitter, and the coil of the voltage transformer is connected with the analog input module by a voltage transmitter. The analog input module and a communication adapter plate are connected with a programmable controller, and the communication adapter plate is connected with the scheduling end of a communications management device. The programmable controller is connected with the input end of a first high-voltage thyristor optical-fiber trigger numerical controller, and the first high-voltage thyristor optical-fiber trigger numerical controller is connected with a second high-voltage thyristor optical-fiber trigger numerical controller by an optical-fiber transmitting-receiving channel. The output end of the second high-voltage thyristor optical-fiber trigger numerical controller is respectively connected with the positive half cycle trigger terminal and the negative half cycle trigger terminal of the valve group.

Description

The contact system deicer

Technical field:

The utility model belongs to the power technology field, and is relevant with the contact system electricity deicer of 27.5kV electrified railway traction power supply system.

Background technology:

Cold zone or cold season operating contact system, under the high humidity meteorological conditions, might cause its ice covering thickness to surpass design condition, thereby cause the contact system operation to have potential safety hazard.

Removing icing or reduce ice covering thickness, alleviate ice coating load, is the effective means of guaranteeing the contact system safe operation, and the validity of deicing means and economy are the key factors that influences contact system deicing scheme (technical index).

Present existing electrical deicing method passes through Electro-Impulse De-icing, the unadjustable and control of ice melting current and ice-melt time, and ice-melt efficient is low.When being short-circuited fault, deicer is easily damaged.

The utility model content:

The purpose of this utility model provide a kind of ice-melt time and ice melting current adjustable, ice-melt efficient height, contact system deicer convenient for installation and maintenance, safe and reliable, as to be suitable for electrification railway contact net.

The utility model is achieved in that

1, the contact system deicer, it is characterized in that being attempted by the 1st after the series connection of circuit breaker summation current transformer, 2 bus (1B, 2B), voltage transformer be connected on the 1st bus (1B) after high-tension fuse is connected, silicon control or thyristor valve group are connected to the 2nd, 3 bus (2B, 3B), the coil of electric current sense transformer connects the analog quantity load module through current transducer, the coil of voltage transformer connects the analog quantity load module through voltage transmitter, the analog quantity load module is connected with Programmable Logic Controller with the communication adaptation board, the communication adaptation board is connected with the dispatching terminal of communication management device, Programmable Logic Controller is connected with the input end that the 1st high-pressure thyristor optical fiber triggers digital control implement, the 1st high-pressure thyristor optical fiber triggers digital control implement and triggers digital control implement by optical fiber transceiver channel and the 2nd high-pressure thyristor optical fiber and be connected, the output of the 2nd high-pressure thyristor optical fiber triggering digital control implement respectively with the valve group just, the negative half period trigger terminal connects.

Casing 1 has voltage transformer interval 2, breaker interval 3, valve group interval 4 and secondary chamber 5, voltage transformer and high-tension fuse are installed in the voltage transformer interval, the circuit breaker summation current transformer is installed in the breaker interval, the thyristor valve group is installed in the valve group interval, the communication management device, the 1st, 2 high-pressure thyristor optical fiber trigger digital control implement, voltage transmitter, current transducer, the analog quantity load module, the communication adaptation board, Programmable Logic Controller is positioned at secondary chamber, the 1st inlet wire 1F introduces on 2 interior the 1st bus 1B of voltage transformer interval, and the 2nd inlet wire 2F introduces on the 3rd bus 3B at valve group interval 4.

The utility model utilizes contact system line impedance and ice-melt to set electric current, and the conduction angle of automatic regulating valve group reaches the purpose of control contact system line ice-melting, and the ice-melt time can be dispatched remote control or self-timing.

Function implementation procedure of the present utility model is as follows: circuit breaker DL is in "on" position under the normal circumstances, valve group T is in off state, after Programmable Logic Controller FX1N-24MR receives the work order of transmitting from communication management device dispatching terminal through communication adaptation board FX1N-232-BD, pass through control end G1/K1 in positive-negative half-cycle respectively, G2/K2 triggers a group of thyristor valve group T, make the positive-negative half-cycle that flows through electric current between inlet wire 1F and the 2F respectively, simultaneously FX1N-24MR is through analog quantity load module FX2N-4AD and corresponding transmitter collecting work electric current and voltage value, as et out of order cutoff thyristor T or by DL sub-gate circuit tripping circuit breaker then; When the work timing time to or when receiving the halt command of dispatching terminal, cutoff thyristor valve group T then.

Secondary device of the present utility model comprises that Programmable Logic Controller, optical fiber trigger digital control implement, communication management device, by inter operation.The secondary singal of voltage transformer YH summation current transformer LH inserts Programmable Logic Controller, according to the ice melting current of setting, the conduction angle of automatically regulating silicon control or IGBT valve group, thereby reach the purpose of control contact system line ice-melting electric current, the ice-melt time can also can be made as self-timing by scheduling remote control control; Ice-melt time and ice melting current definite value are set by the man-machine interface of the dispatching of communication management device; When being short-circuited fault, can send the trip signal cut-off breaker.

Voltage transformer with fuse as overcurrent protection.

The beneficial effects of the utility model are, electrical main connecting wire is simple, and required electrical equipment is few, and ice melting current can be adjusted, and maintenance safety is convenient, and maintenance workload is few.Can be fixedly installed in traction and become institute or section post, also can be used as mobile device and be installed on the engineering truck.

Description of drawings:

Fig. 1 is integral structure figure of the present utility model.

1. casings among the figure, 2. voltage transformer interval, 3. breaker interval, 4. silicon control (or IGBT) valve group interval, 5. secondary chamber.

Fig. 2 is an electric main wiring diagram of the present utility model.

Among the figure: FUSE: high-tension fuse; YH: voltage transformer; DL: circuit breaker; LH: current transformer;

T: thyristor valve group

Fig. 3 is the structural representation of each function counter of the utility model.

Fig. 4 is the utility model secondary device connection diagram.

The specific embodiment:

1. the utility model is by casing 1, and primary equipment and secondary device casing constitute, and structure as shown in Figure 1.Primary equipment voltage transformer YH and high-tension fuse FUSE be installed on voltage transformer at interval 2, circuit breaker DL summation current transformer LH is installed on breaker interval 3, silicon control (or IGBT) valve group T and is installed on valve group at interval 4; Secondary device is installed in the secondary chamber of casing, and secondary device comprises that communication management device, Programmable Logic Controller, optical fiber trigger digital control implement.

2. being configured to of the utility model primary equipment: 1 voltage transformer YH, 1 high-tension fuse FUSE, 1 circuit breaker DL, 1 current transformer LH, 1 cover silicon control (or IGBT) valve group T, the annexation of the said equipment is seen Fig. 2.

Article 1, inlet wire 1F introduces through cable or wall bushing and presses mutually at interval in the 1C on the bus 1B, voltage transformer YH be connected on the bus 1B after high-tension fuse FUSE connects.

Be attempted by between 2 bus 1B, the 2B after the circuit breaker DL summation current transformer LH series connection, 4 at breaker interval 3 and silicon control (or IGBT) valve group interval are connected by bus 2B.

Article 1, inlet wire 2F introduces on silicon control (or IGBT) the valve group interval 4 bus 3B through cable or wall bushing, and silicon control (or IGBT) valve group T is attempted by between two bus 3B, the 2B.

The electrical main connecting wire that the utility model relates to as shown in Figure 2.

The secondary device that the utility model relates to connects signal as shown in Figure 4.

Among the figure: LH: the Current Transformer Secondary coil; YH: voltage transformer secondary coil;

BSQ1: voltage transmitter; BSQ2: current transducer;

FX2N-4AD:4 tunnels analogy amount load module (CH#+, CH#-are the analog quantity input terminal);

FX1N-24MR: Programmable Logic Controller (link to each other with FX2N-4AD and RS-232-BD data line, Y# is the delivery channel terminal, and X# is the input channel terminal);

FX1N-232-BD:RS-232C communication adaptation board;

GY-GQ-2: high-pressure thyristor optical fiber triggers digital control implement (D#: trigging pulse input end; Q# optical fiber transceiver channel; G#/K#: the thyristor trigger terminal).

Claims

1. contact system deicer, it is characterized in that being attempted by the 1st after the series connection of circuit breaker summation current transformer, 2 bus (1B, 2B), voltage transformer be connected on the 1st bus (1B) after high-tension fuse is connected, silicon control or thyristor valve group are connected to the 2nd, 3 bus (2B, 3B), the coil of electric current sense transformer connects the analog quantity load module through current transducer, the coil of voltage transformer connects the analog quantity load module through voltage transmitter, the analog quantity load module is connected with Programmable Logic Controller with the communication adaptation board, the communication adaptation board is connected with the dispatching terminal of communication management device, Programmable Logic Controller is connected with the input end that the 1st high-pressure thyristor optical fiber triggers digital control implement, the 1st high-pressure thyristor optical fiber triggers digital control implement and triggers digital control implement by optical fiber transceiver channel and the 2nd high-pressure thyristor optical fiber and be connected, the output of the 2nd high-pressure thyristor optical fiber triggering digital control implement respectively with the valve group just, the negative half period trigger terminal connects.

2. contact system deicer according to claim 1, it is characterized in that casing (1) has voltage transformer (2) at interval, breaker interval (3), the valve group is (4) and secondary chamber (5) at interval, voltage transformer and high-tension fuse are installed in the voltage transformer interval, the circuit breaker summation current transformer is installed in the breaker interval, the thyristor valve group is installed in the valve group interval, the communication management device, the 1st, 2 high-pressure thyristor optical fiber trigger digital control implement, voltage transmitter, current transducer, the analog quantity load module, the communication adaptation board, Programmable Logic Controller is positioned at secondary chamber, the 1st inlet wire (1F) is introduced on interior the 1st bus (1B) in voltage transformer interval (2), and the 2nd inlet wire (2F) is introduced on the 3rd bus (3B) at valve group interval (4).